CN203644368U - Anti-fault control circuit of LED display screen - Google Patents
Anti-fault control circuit of LED display screen Download PDFInfo
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- CN203644368U CN203644368U CN201320829955.9U CN201320829955U CN203644368U CN 203644368 U CN203644368 U CN 203644368U CN 201320829955 U CN201320829955 U CN 201320829955U CN 203644368 U CN203644368 U CN 203644368U
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- receiving card
- circuit
- led display
- data selection
- channel receiving
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- 238000001514 detection method Methods 0.000 abstract description 7
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- 238000010586 diagram Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses an anti-fault control circuit of an LED display screen. The anti-fault control circuit comprises a data distributor, a first channel receiving card, a second channel receiving card, a signal detection circuit and a data selection circuit, the data distributor receives control signals from an external signal source, two output terminals of the data distributor respectively output the signals to the first channel receiving card and the second channel receiving card, output terminals of the first channel receiving card and the second channel receiving card are both connected with the signal detection circuit, the signal detection circuit detects a plurality of control signals of the first channel receiving card and sending a detection result to the data selection circuit, and the data selection circuit selects to connect the first channel receiving card to an LED display unit or selects to connect the second channel receiving card to the LED display unit to replace the first channel receiving card according to the detection result from the signal detection circuit. According to the anti-fault control circuit of the LED display screen, two-channel signals are provided, a channel of input signals in use are monitored and determined in real time through the combination of a logic circuit, when a fault occurs in the channel, the other channel is automatically switched so that the normal operation of the LED display screen is guaranteed.
Description
Technical field
The utility model relates to LED display technical field, relates more specifically to the anti-fault control circuit of a kind of LED display.
Background technology
In recent years, LED relies on the superiority such as the low price, low consumption, high brightness, long-life of its uniqueness throwing light on always and important role is being played the part of in demonstration field, and also has sizable development space within one quite long from now on period.Wherein, LED display is because having the advantages such as high brightness, sliceable use, convenient, flexible, efficient low-consume, and it is particularly quite extensive in the application in the fields such as physical culture, advertisement, finance, exhibition, traffic at large-area displays.
At present, traditional LED display control system, what all adopt is to surpass five class netting twines, the signal transmission form of one-in-and-one-out, in use, inevitably occur that netting twine gets loose or receiving card hardware fault, make signal interruption, need to manually carry out rebuild maintenance, cause display screen normally not move.
Given this, be necessary to provide the anti-fault control circuit of a kind of LED display to solve the above-mentioned defect of prior art.
Utility model content
The purpose of this utility model is to provide the anti-fault control circuit of a kind of LED display, to address the deficiencies of the prior art.
To achieve these goals, the utility model provides a kind of LED display anti-fault control circuit, it comprises data distributor, first via receiving card, the second road receiving card, signal deteching circuit and data selection circuit, wherein, the input end of described data distributor receives the control signal from outside source, its two output terminal exports respectively first via receiving card and the second road receiving card to, the output terminal of described first via receiving card and the second road receiving card is all connected to signal deteching circuit, described signal deteching circuit detects multiple control signals of first via receiving card and testing result is sent to data selection circuit, described data selection circuit is selected first via receiving card to be switched to LED display unit or the second road receiving card is switched to LED display unit to substitute first via receiving card according to the testing result from signal deteching circuit.
Its further technical scheme is: described first via receiving card and the second road receiving card form by multiple receiving card serial connections.
Its further technical scheme is: described signal deteching circuit comprises multiple monostalbe triggers and a logical and circuit, multiple monostalbe triggers are respectively used to detect in the first via receiving card multi-way control signals and export logical and circuit to, and described logical and circuit exports described data selection circuit to.
Its further technical scheme is: described data selection circuit is inputted MUX by Yi Ge tetra-tunnels two and formed.
Compared with prior art, the anti-fault control circuit of LED display provided by the utility model is provided with two-way signal, pass through combinational logic circuit, to using Zhong mono-road input signal to carry out Real-Time Monitoring, judgement, in the time that it breaks down, in short time, automatically switch to another road, handoff procedure human eye perceives less than any flicker or, shake or blank screen phenomenon.Adopt the anti-fault control circuit of LED display of the present utility model can avoid LED display to get loose or receiving card hardware fault can not normally be moved because of netting twine, thereby reduce probability of malfunction, reduce maintenance cost.
By following description also by reference to the accompanying drawings, it is more clear that the utility model will become, and these accompanying drawings are used for explaining embodiment of the present utility model.
Accompanying drawing explanation
Fig. 1 is the frame principle figure of the anti-fault control circuit of the utility model LED display.
Fig. 2 is the concrete frame assumption diagram of anti-fault control circuit one embodiment of LED display shown in Fig. 1.
Fig. 3 and Fig. 4 are the partial circuit figure of signal deteching circuit in the anti-fault control circuit of LED display shown in Fig. 2.
Fig. 5 is the circuit diagram of data selection circuit in the anti-fault control circuit of LED display shown in Fig. 2.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in embodiment is clearly and completely described, in accompanying drawing, similarly assembly label represents similar assembly.Obviously, below be only the utility model part embodiment by the embodiment of description, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 and Fig. 2 have shown the frame structure of the anti-fault control circuit of the utility model LED display.As depicted in figs. 1 and 2, the anti-fault control circuit 10 of LED display provided by the utility model comprises data distributor 11, first via receiving card 12, the second road receiving card 13, signal deteching circuit 14 and data selection circuit 15.Wherein, the input end of described data distributor 11 is connected to the host computers such as such as PC of an outside source 20() to receive the control signal from this outside source 20, and be divided into the signal that two-way is the same, export respectively first via receiving card 12 and the second road receiving card 13 to.
In the present embodiment, described first via receiving card 12 and the second road receiving card 13 are identical circuit structure, it forms by multiple receiving card serial connections, wherein first via receiving card 12 is as main line, the second road receiving card 13 is as extension wire, the output terminal of described first via receiving card 12 and the second road receiving card 13 is all connected to signal deteching circuit 14, output multi-channel control signal, for example CLK, LAT, OE, A, B, C, D Deng Qi road control signal.
With reference to Fig. 3 and Fig. 4, the signal deteching circuit 14 of the present embodiment comprises multiple monostalbe triggers (adopting 74HC123 chip to realize) and a logical and circuit.Wherein, each monostalbe trigger is for detection of first via receiving card 12Zhong mono-tunnel control signal, multiple monostalbe triggers are respectively used to detect the multi-way control signals in first via receiving card 12, and all export logical and circuit to, described logical and circuit is carried out logic and is connected with door by multiple, and it carries out exporting to data selection circuit 15 from output terminal after logical process to signal.
With reference to Fig. 5, the data selection circuit 15 of the present embodiment is mainly inputted MUX (adopting 74HC157 chip to realize) by Yi Ge tetra-tunnels 2 and is formed, the input end of this 74HC157 chip is connected with the output terminal of logical and circuit, thereby receive the testing result from signal deteching circuit 14, and according to this result, select first via receiving card 12 and LED display unit 30 are connected or the second road receiving card 13 is switched to LED display unit 30 to substitute first via receiving card 12.
Below with reference to Fig. 1-5, the circuit theory as an example of CLK signal example to the present embodiment describes.
Monostalbe trigger (74HC123 chip) gathers the CLK signal on receiving card, at CLK rising edge, and output trigger pip PD1, the width of this trigger pip PD1 is determined by RC circuit, the RC coefficient >CLK signal period.In the time that signal is normal, the trigger pip PD1 of Q end output is " 1 ", otherwise is " 0 ".In like manner, adopt other six 74HC123 chips to detect respectively LAT, OE, A, B, C, the D signal on receiving card, obtain testing result and be respectively PD2, PD3, PD4, PD5, PD6, PD7.And then, logical and circuit shown in Fig. 3 carries out logic "and" operation to signal PD1-PD7, only have in the time that CLK, LAT, OE, A, B, C, D signal are all normal, also be that PD1-PD7 is while being " 1 ", the output signal SELECT of its output terminal is " 1 ", any one signal breaks down, and SELECT is " 0 ".In the time that SELECT is " 1 ", 74HC157 exports Y=A, selects the signal of CARDA, and now, first via receiving card 12 is in use state, itself and display unit 30(casing) connect; In the time that SELECT is " 0 ", 74HC157 exports Y=B, selects the signal of CARDB, now enables the second road receiving card 13 and substitutes the first via receiving card 12 breaking down.
As mentioned above, the anti-fault control circuit of LED display provided by the utility model is provided with two-way signal, pass through combinational logic circuit, to using Zhong mono-road input signal to carry out Real-Time Monitoring, judgement, in the time that it breaks down, automatically switch to another road, switching time is adjustable from 400ns to 10us, handoff procedure human eye perceives less than any flicker or, shake or blank screen phenomenon.Adopt the anti-fault control circuit of LED display of the present utility model can avoid LED display to get loose or receiving card hardware fault can not normally be moved because of netting twine, thereby reduce probability of malfunction, reduce maintenance cost.
Understandably, the utility model also can arrange two-way or receiving card for subsequent use more than two-way according to the actual requirements, thereby provides safer freedom from repairs guarantee to LED display.
It should be noted that, the data distributor in the utility model and the physical circuit of receiving card and principle are well known to those skilled in the art, and do not repeat them here.
In conjunction with most preferred embodiment, the utility model is described above, but the utility model is not limited to the embodiment of above announcement, and should contains the various modifications of carrying out according to essence of the present utility model, equivalent combinations.
Claims (4)
1. the anti-fault control circuit of LED display, it is characterized in that: comprise data distributor, first via receiving card, the second road receiving card, signal deteching circuit and data selection circuit, the input end of described data distributor receives the control signal from outside source, its two output terminal exports respectively first via receiving card and the second road receiving card to, the output terminal of described first via receiving card and the second road receiving card is all connected to signal deteching circuit, described signal deteching circuit detects multiple control signals of first via receiving card and testing result is sent to data selection circuit, described data selection circuit is selected first via receiving card to be switched to LED display unit or the second road receiving card is switched to LED display unit to substitute first via receiving card according to the testing result from signal deteching circuit.
2. the anti-fault control circuit of LED display as claimed in claim 1, is characterized in that: described first via receiving card and the second road receiving card form by multiple receiving card serial connections.
3. the anti-fault control circuit of LED display as claimed in claim 1, it is characterized in that: described signal deteching circuit comprises multiple monostalbe triggers and a logical and circuit, multiple monostalbe triggers are respectively used to detect in the first via receiving card multi-way control signals and export logical and circuit to, and described logical and circuit exports described data selection circuit to.
4. the anti-fault control circuit of LED display as claimed in claim 3, is characterized in that: described data selection circuit is inputted MUX by Yi Ge tetra-tunnels two and formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320829955.9U CN203644368U (en) | 2013-12-13 | 2013-12-13 | Anti-fault control circuit of LED display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320829955.9U CN203644368U (en) | 2013-12-13 | 2013-12-13 | Anti-fault control circuit of LED display screen |
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| Publication Number | Publication Date |
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| CN203644368U true CN203644368U (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320829955.9U Expired - Lifetime CN203644368U (en) | 2013-12-13 | 2013-12-13 | Anti-fault control circuit of LED display screen |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167178A (en) * | 2014-08-15 | 2014-11-26 | 西安诺瓦电子科技有限公司 | Display control system, display system and display control method |
| CN104680946A (en) * | 2015-02-12 | 2015-06-03 | 刘剑冰 | Mutual splicing circuit structure of LED (light emitting diode) display screen and splicing wiring method |
| CN104821149A (en) * | 2015-04-15 | 2015-08-05 | 晶彩（福建）光电有限公司 | Double-system double-power-supply small-space LED display screen |
| CN104952392A (en) * | 2015-06-30 | 2015-09-30 | 韩光泉 | Data backup and fault prevention system for LED display screen |
| CN105321468A (en) * | 2015-11-13 | 2016-02-10 | 苏州扬佛自动化设备有限公司 | Light-controlled LED display screen control system |
| WO2017114319A1 (en) * | 2015-12-30 | 2017-07-06 | 青岛歌尔声学科技有限公司 | Dual-sensor signal collection circuit |
| CN109147652A (en) * | 2018-09-25 | 2019-01-04 | 深圳市德彩光电有限公司 | A kind of LED display data backup device and system |
| CN109920370A (en) * | 2019-04-17 | 2019-06-21 | 东莞阿尔泰显示技术有限公司 | A kind of novel LED display screen system backup circuit and its control method |
| CN110109641A (en) * | 2019-06-05 | 2019-08-09 | 东莞阿尔泰显示技术有限公司 | A kind of novel LED display screen data backup device and method |
| CN110824961A (en) * | 2019-10-31 | 2020-02-21 | 航宇救生装备有限公司 | Method for selecting multiple data sources of main control device of ejection lifesaving system |
| CN111833799A (en) * | 2019-04-15 | 2020-10-27 | 杭州海康威视数字技术股份有限公司 | LED receiving assembly and receiving card switching method |
| CN114910733A (en) * | 2022-07-15 | 2022-08-16 | 深圳益实科技有限公司 | Display fault intelligent diagnosis analysis system based on artificial intelligence |
-
2013
- 2013-12-13 CN CN201320829955.9U patent/CN203644368U/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167178A (en) * | 2014-08-15 | 2014-11-26 | 西安诺瓦电子科技有限公司 | Display control system, display system and display control method |
| CN104680946B (en) * | 2015-02-12 | 2017-08-29 | 深圳市科美芯光电技术有限公司 | The mutual splicing line construction and splicing Wiring method of a kind of LED display |
| CN104680946A (en) * | 2015-02-12 | 2015-06-03 | 刘剑冰 | Mutual splicing circuit structure of LED (light emitting diode) display screen and splicing wiring method |
| CN104821149A (en) * | 2015-04-15 | 2015-08-05 | 晶彩（福建）光电有限公司 | Double-system double-power-supply small-space LED display screen |
| CN104952392A (en) * | 2015-06-30 | 2015-09-30 | 韩光泉 | Data backup and fault prevention system for LED display screen |
| CN105321468A (en) * | 2015-11-13 | 2016-02-10 | 苏州扬佛自动化设备有限公司 | Light-controlled LED display screen control system |
| US10177777B2 (en) | 2015-12-30 | 2019-01-08 | Qingdao Goertek Technology Co., Ltd. | Dual-sensor signal collecting circuit |
| WO2017114319A1 (en) * | 2015-12-30 | 2017-07-06 | 青岛歌尔声学科技有限公司 | Dual-sensor signal collection circuit |
| CN109147652A (en) * | 2018-09-25 | 2019-01-04 | 深圳市德彩光电有限公司 | A kind of LED display data backup device and system |
| CN111833799A (en) * | 2019-04-15 | 2020-10-27 | 杭州海康威视数字技术股份有限公司 | LED receiving assembly and receiving card switching method |
| CN109920370A (en) * | 2019-04-17 | 2019-06-21 | 东莞阿尔泰显示技术有限公司 | A kind of novel LED display screen system backup circuit and its control method |
| CN110109641A (en) * | 2019-06-05 | 2019-08-09 | 东莞阿尔泰显示技术有限公司 | A kind of novel LED display screen data backup device and method |
| CN110824961A (en) * | 2019-10-31 | 2020-02-21 | 航宇救生装备有限公司 | Method for selecting multiple data sources of main control device of ejection lifesaving system |
| CN110824961B (en) * | 2019-10-31 | 2022-06-17 | 航宇救生装备有限公司 | Method for selecting multiple data sources of main control device of ejection lifesaving system |
| CN114910733A (en) * | 2022-07-15 | 2022-08-16 | 深圳益实科技有限公司 | Display fault intelligent diagnosis analysis system based on artificial intelligence |
| CN114910733B (en) * | 2022-07-15 | 2022-09-30 | 深圳益实科技有限公司 | Display fault intelligent diagnosis analysis system based on artificial intelligence |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |
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| CX01 | Expiry of patent term |